Warning: file_put_contents(): Only 0 of 8467 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu.com/index.php on line 58 naturally occurring radioactive material是什么意思，naturally occurring radioactive material的翻译，naturally occurring radioactive material音标、读音、用法和例句_英語字典
In fact, standards for NORM (naturally occurring radioactive material) have been observed for years. FORBES: Don't Be Swayed By Faucets On Fire And Other Anti-Fracking Propaganda